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Q3 – Week 4 – 2/28 – 3/4

1: Cell Anatomy – Cell Organelles and Function 21 – 22 :


3/1 – Tuesday –  A  Day – 

Main focus –                                                                                                                                                          

a)  To Review the Fermentation Pathways

b)  To introduce the regulation of metabolic pathways in photosynthesis and cell respiration. 
1.  Complete the Fermentation presentation:
            a) Biosynthesis
            b) input of nutrients into Cell Respiration
            c) Regulation of Cell Respiration and Photosynthesis
            d)  Photorespiration discussion:  


 C3 vs C4 and CAM metabolic pathways:


Fermentation and Regulation (slides  7 – 32 )


3/1 – Tuesday’s Homework: –

1. Please complete the following form that you started in class using the following article from Khan Academy: 

1: Fermentation Metabolic Pathways Form


3/2 – Wednesday –  B Day 

Main focus –                                                                                                                                                          
a) To Review Photorespiration in Photosynthesis with the discussion of C3 and C4 pant           pathways.

b) To compare and contrast Cell Respiration with Photosynthesis by making a “this and a           that” Review Sheet.

1.  Complete the slides in the Fermentation presentation to review Photorespiration.

2. Begin the This and That Activity. 

Cellular Respiration Chart.pdf
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Cell respiration Bio Notes pics 4 pages.pdf
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Complete Cellular Respiration Formula:                         
                        C6H12O6 (s)       +       6O2       —–>       6CO2(g)        +       6H2O (l)
      glucose      –>      Electron Carriers (NAD+, FAD)          –>      Electron transport System  (Oxygen bonds with H+ to make H2O)
   High Energy                          oxidize glucose                                     high energy electrons used to pump H+ ions against gradient
       Electrons                                                                                                 these H+ rush out of membrane giving atp synthase energy 
                                          High energy electrons   —–>    Low Energy electrons
                                               e – get oxidized                         oxygen gets reduced
                                                from glucose                         accepting the low energy e-      
Cellular Respiration Chart.pdf
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Cell respiration Bio Notes pics 4 pages.pdf
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Complete Photosynthesis Formula:   
                 18 ATP        +       12 H2O (l)     +     6 CO2 (g)   ———>   6 O2 (g)    +     C6H12O6     +      H2O
     made from sunlight      roots uptake     stomata (pores)          waste             concentrated energy
photosynthesis diagrams.pdf
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Photosynthesis diagram overview.pdf
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Photosynthesis diagram worksheet 2.pdf
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 Mr. Grodski’s This and That:   


Fermentation and Regulation (slides  32 – )


3/2- Wednesday’s Homework: –

1. Please complete the Vocabulary (page 5) and the beginning of part 3 (page 7) as a take-home portion of the test. It is due tomorrow in class.
2. Tomorrow you will have a Multiple Choice and a diagram section of the test that will IN CLASS.  You could review with the Cell Respiration and Photosynthesis Review Page posted in Quarter 3.  
3:  We will                                                                                        


3/3 – Thursday –  A Day 

Main focus –                                                                                                                                                          
a)  To take in the in- class portion of the Cell Respiration and Photosynthesis test.
1. Cell Respiration and Photosynthesis Test
 – Pages 1 – 4, 6,  11, 12 Taken in class individually.

.  _____________________

3/3 -Thursday’s Homework: –


1. Please complete pages 8, 9, 10 of the Cell Respiration and Photosynthesis test. It is due tomorrow.


3/4 – Friday – B Day

Main focus –                                                                                                                                                          
a)  To introduce the molecular structure of the Cell Membrane.
b)  To discuss the semi- permeable nature of the Cell Membrane.

C)  To Introduce Water Potential Concepts.

1. Cell Membrane Basics  walkthrough of the slides of the presentation (slides 1 – 31 today)

Our focus to the end of the year is cell to cell communication and that starts with the cell membrane that defines the inside of the cell (intracellular) and the outside of the cell (extracellular).  The cell membrane determines what components can enter or leave the living space (intracellular) and it also is responsible for the protruding protein receptors that allow for chemical messengers to communicate.
2. Animation – 


3. Cell membrane – permeable to (in terms to ) 
small nonpolar
small polar
Big Nonpolar
Big Polar


4. Water Potential –  Introduction

Cell Membrane  Presentation –

Water Potential  Presentation –


3/4 – Weekend Homework: –

1.  Please use Chapter 7 in your Text to answer the Cell membrane form: 

2. Please Read the NOTES posted below on WATER POTENTIAL posted Below.

3.  Please follow along with the Water Potential worksheet.pdf worksheet while listening to the lecture       posted below:
Water potential worksheet Key p.pdf
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Water Potential worksheet.pdf
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This weekend we are learning how water and why water passively diffuses into and out of cells through integral transmembrane proteins called aquaporins.  This diffusion of water is specifically called osmosis and its ability to move across the cell membrane is based on a mathematical concept called water potential (ψ).  Do not get intimidated by the ψ symbol.
The greater the ability for water to reach the aquaporins at the cell membrane the greater the ability the water has to perform osmosis.  We say that in this instance water has high water potential.
The highest water potential water can have is zero.  This would be with water with no solute particles.
                                                                                     ψ water = 0
The lower the ability for water reach the aquaporins at the cell membrane, the lower the ability water has to perform osmosis. We say that in this instance water has low water potential.  The lowest water potential will have the most negative number.
                                                                                  ψ water = negative
The factors that determine the ability of water to undergo movement across a membrane include the dissolved particles in the solution called the solute potential ψsolute  (solute potential) and ψpressure (pressure potential).  Pressure potential can be both positive or negative depending if the pressure helps water get to the membrane (positive) or if it prevents it (negative).
                                                            ψ water =   ψ  pressure  +  ψ solute
Dissolved particles get in the way of water reaching the aquaporins in the cell membrane and thus solute potential is always negative.
                                                                     ψsolute = – iCRT
              i = the number of particles the dissolved particle breaks apart into.
                                                   Example:   NaCl   —->  Na+   +   Cl–   (2 particles)
                                                             So NaCl (table salt) has an i = 2
              C = Concentration value = how much (Molarity)
              R = Gas Law Constant
              T = Temperature (kelvin scale)


There is movement of water in both directions BUT there is OVERALL NET movement of water TO THE Right!
This is because there is higher water potential on the left side of the semipermeable membrane AND there is Lower water potential on the right side due the dissolved particles (getting in the way of water reaching the membrane).  
           The formulas for water potential and solute potential are located in your reference table:

1: Cell Membrane Form 1 – 21 -22

3: AP Biology Water Potential worksheet 1 lecture

4: Water Potential Form 21-22